Add STATUS_EOF value needed for auth.c.  Remove a bunch of unused STATUS_xxx macros to reduce clutter.
Add STATUS_EOF value needed for auth.c.  Remove a bunch of unused
STATUS_xxx macros to reduce clutter.

foyzur/gpdb,atris/gpdb,arcivanov/postgres-xl,oberstet/postgres-xl,lisakowen/gpdb,pavanvd/postgres-xl,lisakowen/gpdb,tpostgres-projects/tPostgres,xinzweb/gpdb,kaknikhil/gpdb,xuegang/gpdb,kaknikhil/gpdb,edespino/gpdb,lintzc/gpdb,tpostgres-projects/tPostgres,yuanzhao/gpdb,Chibin/gpdb,lisakowen/gpdb,zeroae/postgres-xl,50wu/gpdb,rvs/gpdb,yuanzhao/gpdb,lintzc/gpdb,CraigHarris/gpdb,adam8157/gpdb,0x0FFF/gpdb,postmind-net/postgres-xl,greenplum-db/gpdb,xuegang/gpdb,xuegang/gpdb,foyzur/gpdb,postmind-net/postgres-xl,ahachete/gpdb,greenplum-db/gpdb,xuegang/gpdb,jmcatamney/gpdb,Chibin/gpdb,0x0FFF/gpdb,tangp3/gpdb,tpostgres-projects/tPostgres,ovr/postgres-xl,chrishajas/gpdb,lpetrov-pivotal/gpdb,royc1/gpdb,lisakowen/gpdb,lintzc/gpdb,xinzweb/gpdb,lisakowen/gpdb,ahachete/gpdb,arcivanov/postgres-xl,janebeckman/gpdb,yuanzhao/gpdb,cjcjameson/gpdb,rvs/gpdb,rubikloud/gpdb,janebeckman/gpdb,lintzc/gpdb,yazun/postgres-xl,jmcatamney/gpdb,techdragon/Postgres-XL,Postgres-XL/Postgres-XL,lisakowen/gpdb,janebeckman/gpdb,xuegang/gpdb,lpetrov-pivotal/gpdb,0x0FFF/gpdb,royc1/gpdb,CraigHarris/gpdb,zaksoup/gpdb,rubikloud/gpdb,yuanzhao/gpdb,zaksoup/gpdb,arcivanov/postgres-xl,lpetrov-pivotal/gpdb,jmcatamney/gpdb,snaga/postgres-xl,yuanzhao/gpdb,jmcatamney/gpdb,ovr/postgres-xl,adam8157/gpdb,ahachete/gpdb,xinzweb/gpdb,janebeckman/gpdb,kaknikhil/gpdb,lintzc/gpdb,techdragon/Postgres-XL,CraigHarris/gpdb,ahachete/gpdb,adam8157/gpdb,0x0FFF/gpdb,Quikling/gpdb,xuegang/gpdb,rubikloud/gpdb,randomtask1155/gpdb,CraigHarris/gpdb,adam8157/gpdb,zaksoup/gpdb,janebeckman/gpdb,zaksoup/gpdb,50wu/gpdb,0x0FFF/gpdb,ovr/postgres-xl,Quikling/gpdb,yazun/postgres-xl,chrishajas/gpdb,Chibin/gpdb,zeroae/postgres-xl,Quikling/gpdb,postmind-net/postgres-xl,lintzc/gpdb,edespino/gpdb,Quikling/gpdb,lpetrov-pivotal/gpdb,arcivanov/postgres-xl,edespino/gpdb,cjcjameson/gpdb,zeroae/postgres-xl,adam8157/gpdb,atris/gpdb,rubikloud/gpdb,50wu/gpdb,chrishajas/gpdb,cjcjameson/gpdb,techdragon/Postgres-XL,tangp3/gpdb,kmjungersen/PostgresXL,Chibin/gpdb,postmind-net/postgres-xl,arcivanov/postgres-xl,Quikling/gpdb,foyzur/gpdb,ashwinstar/gpdb,snaga/postgres-xl,tangp3/gpdb,rvs/gpdb,tpostgres-projects/tPostgres,Chibin/gpdb,kaknikhil/gpdb,cjcjameson/gpdb,xinzweb/gpdb,xinzweb/gpdb,randomtask1155/gpdb,Postgres-XL/Postgres-XL,CraigHarris/gpdb,tangp3/gpdb,rvs/gpdb,tangp3/gpdb,oberstet/postgres-xl,Postgres-XL/Postgres-XL,ashwinstar/gpdb,chrishajas/gpdb,rvs/gpdb,janebeckman/gpdb,royc1/gpdb,xuegang/gpdb,rubikloud/gpdb,foyzur/gpdb,foyzur/gpdb,zaksoup/gpdb,CraigHarris/gpdb,lpetrov-pivotal/gpdb,atris/gpdb,Chibin/gpdb,oberstet/postgres-xl,oberstet/postgres-xl,yuanzhao/gpdb,zaksoup/gpdb,royc1/gpdb,techdragon/Postgres-XL,lintzc/gpdb,randomtask1155/gpdb,foyzur/gpdb,Quikling/gpdb,50wu/gpdb,kaknikhil/gpdb,janebeckman/gpdb,50wu/gpdb,CraigHarris/gpdb,ovr/postgres-xl,xinzweb/gpdb,rvs/gpdb,xinzweb/gpdb,randomtask1155/gpdb,edespino/gpdb,rubikloud/gpdb,atris/gpdb,rvs/gpdb,tangp3/gpdb,jmcatamney/gpdb,randomtask1155/gpdb,yuanzhao/gpdb,chrishajas/gpdb,royc1/gpdb,kaknikhil/gpdb,snaga/postgres-xl,lisakowen/gpdb,lpetrov-pivotal/gpdb,xuegang/gpdb,yazun/postgres-xl,cjcjameson/gpdb,kmjungersen/PostgresXL,kaknikhil/gpdb,atris/gpdb,50wu/gpdb,janebeckman/gpdb,rubikloud/gpdb,jmcatamney/gpdb,randomtask1155/gpdb,atris/gpdb,Quikling/gpdb,tpostgres-projects/tPostgres,greenplum-db/gpdb,lpetrov-pivotal/gpdb,techdragon/Postgres-XL,randomtask1155/gpdb,zeroae/postgres-xl,atris/gpdb,Postgres-XL/Postgres-XL,kmjungersen/PostgresXL,ashwinstar/gpdb,yuanzhao/gpdb,pavanvd/postgres-xl,edespino/gpdb,CraigHarris/gpdb,chrishajas/gpdb,ahachete/gpdb,Postgres-XL/Postgres-XL,atris/gpdb,postmind-net/postgres-xl,ahachete/gpdb,royc1/gpdb,yuanzhao/gpdb,Quikling/gpdb,0x0FFF/gpdb,zaksoup/gpdb,zeroae/postgres-xl,ashwinstar/gpdb,Chibin/gpdb,chrishajas/gpdb,Quikling/gpdb,tangp3/gpdb,edespino/gpdb,greenplum-db/gpdb,CraigHarris/gpdb,pavanvd/postgres-xl,rvs/gpdb,yazun/postgres-xl,lintzc/gpdb,Quikling/gpdb,snaga/postgres-xl,jmcatamney/gpdb,edespino/gpdb,arcivanov/postgres-xl,kaknikhil/gpdb,ahachete/gpdb,ashwinstar/gpdb,0x0FFF/gpdb,jmcatamney/gpdb,rvs/gpdb,kmjungersen/PostgresXL,kaknikhil/gpdb,50wu/gpdb,cjcjameson/gpdb,greenplum-db/gpdb,cjcjameson/gpdb,xinzweb/gpdb,cjcjameson/gpdb,lintzc/gpdb,rubikloud/gpdb,kaknikhil/gpdb,adam8157/gpdb,edespino/gpdb,oberstet/postgres-xl,ashwinstar/gpdb,ovr/postgres-xl,janebeckman/gpdb,lisakowen/gpdb,xuegang/gpdb,kmjungersen/PostgresXL,royc1/gpdb,50wu/gpdb,0x0FFF/gpdb,Chibin/gpdb,chrishajas/gpdb,foyzur/gpdb,Chibin/gpdb,cjcjameson/gpdb,randomtask1155/gpdb,Chibin/gpdb,yuanzhao/gpdb,pavanvd/postgres-xl,greenplum-db/gpdb,snaga/postgres-xl,zaksoup/gpdb,pavanvd/postgres-xl,adam8157/gpdb,greenplum-db/gpdb,edespino/gpdb,cjcjameson/gpdb,lpetrov-pivotal/gpdb,ashwinstar/gpdb,foyzur/gpdb,greenplum-db/gpdb,tangp3/gpdb,ashwinstar/gpdb,royc1/gpdb,ahachete/gpdb,edespino/gpdb,adam8157/gpdb,rvs/gpdb,janebeckman/gpdb,yazun/postgres-xl